Today fuel efficiency is a key word practically in all stages of shipbuilding and shipping. New projects are developed with utmost attention on fuel efficiency related to hull geometry, hull openings, appendages, hull roughness, system configuration and performance. RANSE-theory based CFD is applied during developing the hull shape with all its details before starting model testing. And, model tests are carried out to reach the absolute state of the art design, not only to fulfill specification.
Systems are configured and simulated to operate at maximum efficiency in typical operational conditions, not just dimensioned for certain maximum conditions. Energy audits are carried out during the design and building period of a newbuilding and during operation. These audits combined with efficient training will secure the most fuel-efficient use of the vessel, its systems and maintenance. Deltamarin has developed training programs which discuss various aspects of fuel consumption onboard cruise ships addressing propulsion, air conditioning and power generation.
Several cruise and ferry operators are taking up these training programs, which are offered at the client’s premises or at Deltamarin. Energy audits of complete fleets are being carried out and in most cases they are combined with training. Typically 10 to 15 fuel saving actions are found and recommended, which result in 2 to 6 months payback time. The typical fuel saving potential is between 5 to 12 %, but even better results have been achieved in certain cases, according to the company.